How would I go about converting a 3d model to a .vox file
If you need any to make any mesh in blender look &quot;minecraft-like&quot;, use a Remesh Modifier set to Blocks. You can then export this to a variety of formats, including .obj. If you need a .vox file, however, you will need a special addon. One of the best I can find to suit your purpose is here, but I can not vouch for its efficacy.
Addon to export to .vox is here:

https://github.com/Spyduck/voxwriter